It’s the story of a man named Martin Harris (Liam Neeson), an American arriving in Germany with his wife (January Jones) to speak at a biotechnology symposium. While checking in to his hotel, he gets separated from his wife. The taxi they arrived in took off with some of their luggage, and he hops in another cab to follow after it. When the cab he’s in gets in to a serious accident, he is nearly killed, winding up in a coma for a handful of days.

When he comes to… He’s been “replaced”. Another man is claiming to be him, and his wife is denying she knows him. He has no way of proving his identity, his memory is faulty, and he’s in foreign country with little money and no one he can trust.